When you borrow from a bank where you also keep your day-to-day cash, you might be opening yourself up to problems down the line. Most banks have a right of setoff, which means they can tap other accounts you hold with them to repay themselves money you owe. For a woman in Atlanta, this meant Wells Fargo legally drained her checking account without warning, leaving her and her husband with no cash and $385 in overdraft fees, due to some ongoing confusion over a student loan.